| 摘要 |
PCT No. PCT/DE94/00306 Sec. 371 Date Aug. 28, 1995 Sec. 102(e) Date Aug. 28, 1995 PCT Filed Mar. 19, 1994 PCT Pub. No. WO94/24796 PCT Pub. Date Oct. 27, 1994A method for adaptation to the time-variable channel impulse response during a burst in receivers for TDMA mobile radio systems, each burst including in the center a test sequence which is known to the receiver and by means of which an initial estimate of the channel impulse response is possible, wherein the received signal of a burst is suitably sampled, the received burst is divided in 2N+1 sectors A-N, . . . , A+N, it being assumed that the channel impulse response can be regarded as being constant within a sector, a vector +E,cir x+EE of dimension (2N+1)L is defined, L being the number of channel impulse response coefficients and the (iL+l)-th component of +E,cir x+EE , -N</=i</=+N, 0</=l</=L-1 is initialized before the start of the detection using the l-th coefficient of the estimated value of the channel impulse response obtained from the test sequence, Matrices E, Ei, Eii, S and vectors +E,cir x+EE i, d, ri are defined, each burst is processed in 2N steps, where in the k-th step, the i-th sector is detected using the components iL, . . . ,(i+1)L-1 of the vector +E,cir x+EE , where the sector Ai is selected in accordance with a suitable method, for example that described in [5], the matrix P=EiS*[ sigma 2I+SEiiS*]-1 is calculated, and the recursions +E,cir x+EE :=+E,cir x+EE +Pd E:=E+PSEi* are carried out.
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